Gun support



May 22, 1928.

J. HENNEVELD GUN SUPPORT 2 Sheets-Sheet 1 Filed Dec. 31, 1926 INVENTOE.JACOBUS HENNEVELD.

ATTORNEY May 22, 1928 1,670,621

J. HENNEVELD GUN SUPPORT Filed Dec. 31, 1926 2 Sheets-Sheet 2 INVENTOEJAcoBus HENNEVELD ATTORNEY Patented May 22, 1928.

siren Estatis mconusnnivimvnm, or ZAANDAM, NETHERLANDS. 1 l

GUN surron'r.

e imination filedjneeember 31, 1926, seriaiu j 's ,22 1' ,f and' inthe.NetherIairdsTehruary 24; 13261 The'object oft his invention toprovide a combination and arrangement of parts appertaining to a gunmounting whereby an extremely firm and steady mounting of the a gun andits supported parts is obtained the .efliciency of the gun mountmg beingenhanced by the inclusion in the combination of parts of mechanism, ofdev ces hereinbe- .vation and horizontal; movement ofthe gun. -Theinvention,.hereinafter described, relatcs to gun mountings of thatparticular type in which ,a base for the cradle of the gun is caused toslide, as whole, over an arcuate upstandingguide, by suitable'means, ina direction whichis parallel to the gun.

In such constructions it has been proposed to mount a: gun so as to turnabout a trainmovable base; the. socket which encompasses the pivothavinga rearwardly extendlng arm of WhlCll the outer end ismovable andadjustable along an arcuate" guide horizontally disposed on theaforesaid'cradle base.

According to thisinvention, a gun support'of'thetype hereinbeforereferred to,

has one end of the arcuate guide revoluble about the training-pivot,which is, in this instance, on'the tripod itself instead of on themovable cradle-base, whilst the other end of the arcuate guide isadapted to move along a horizontally disposed arcuate support which ison the rigid central portion of the tripod, instead of being on themovable cradle base. The pin of the pivot can be on spindle and ahand-Wheel having a graduation. As these means only serve to adjust theelevation between two division marks of the graduation on the slide ofthe cradle.

base, the said threaded sleeve and screw spindle may be so short that noappreciable error is caused by the fact that the chord is taken for theare.

I v fmo'ved, so; as to clearly tore used in, connection with gunmountings v such, for instance, as a spirit level to ensure vthetraining-pii' ot being vertical and scales and pointers to indicate thedegree ofjele 1ngj-pivot projecting from the aforesaid 1 Referencewith':, H j j j, I Figure '1 of thejdrawing' illustrates, by way ofexample only,'a, support' inraccord- Vance witlrthe invention, with amachine gun mounted, thereon, Figure Q-Ibeing a plan. viewof thesupportwith the cradle remember and the segment.

short lengths, of tubes 1, 2 and 8. The tube ,1 has a rearward extensionor leg 4, which has a telescopic connection with a rod 5 provided with aspur 6 and a ground plate Thetripod :of the :support has al rigidcentral portion or spider, composedof three being to the dra-win gshere,g

,show the supporting I 7, Ear-.li}of the tubes 2 and 3 is provided withatoothed sector 8 and 12,respectively and with a hinge Qand 13,respectively,for

securing in positionxthe lateral telescopic legs j 10 and *14; provided-with ball jointed ground plates ll and 15, respectively} The'rigidspider ofthe tripod has a cen trally disposed pin ltiofa training-pivot,which,,by adjustment of ,thelegs, can be set exactly verticalwith theaid of levels" 17 and 18, and, 'turtherwith a semi-circular seginent laThe pin16 of the training piv-,

ot fits withina socket of tl e cradlerbase 26, but, itlvwill beunderstoodthat the pin 16 can been the arci'iatefguide 20 and theqsp ketQlltllq head ot'the tripod. The arcua'te; 1 guide 20 has a curvedraceway 211for the base 26 'for 'thejfcradle, of the gun which" baseprovided,- at its'rear end, with a slide piece: "22. v This slide.piecejis adapted to inove over the "segment 19 and has an index 23 forindicating its exact position; On; OltllCl', side of the slidep1ece- 22,the segment 19-has an adjustable abutment 25L, 2 5;

whichservcs to prevent the line of fire 'from 3 being moved'beyond apredetermined direction, for instance, with a view to protect-' ingtroops in'the forefield. The segment 19 abutnients 24C and 25 may besecured against IllOvablGOVeI the raceway '21 ofthe arcuate i guide 20.Said slide'has ascaleco-operat' has a toothed rim by means' of which the0 I v I Y angtinha pointe'r29, and a toothed rim 28 7 .coi-operatir g Iwith a pinion rotatably mounted in the aICuateguide'QO-Df the supportingmember; Consequently the'cradlebase with the guneradle-andgun maybe setat "therequired'elevation by means of the pinionSOthe shaft of which,for thisp'urpose,is provided with a crank (notshown).

toothed rim (Figure 2) "and a clamping Jpiece, operable through a'handle32, serve toscuie' the bas 'eifor the cradle in'position.

In jorderthatthe elevation of the gunmay be accurately adjusted betweentwo adjacent otedias" atji 33150 the gun andqfitted near itsrear-end\rlith aithreadedsleeve 34 having a i 20 adapted to, be insertedinto thesefho handwheel secured thereto. Said hand-1 wheel" is: providedwith a graduation, the division marks of j which 7 correspond with holes:in 'the rim 'o'fthefwheel. Tappets 36,

es and to orb-operate withxan abutment 37,'serve to (limit the qangular.distance, through which the hanjdwheel. Canbe turned. The threadedsleereidt" works; in But of thecradleb'ase'and,"itselflijacts. as afn'utfor a hollow g screw spindle 38," which is pivotally 'connet-mama therear enduO of the machine gun fthrough a'zshort rod 39 hinged thereto.The gun is pointed", at -zr'visible or invisibleobject,independent-Bibi? the sight, in the-following manner f Fasterfall, thefltraining-pivot 1 1 is. set

exactly Vertical with thefaid of the waterleYelslZ, 18' and bysuitableadjust nent of the legs of theQtripQdQ The requiredelevati on isread from (a table in accordance with thejk'nown or the gaugeddistance/from the i targeu allowances' being made for the type ofcartridge fusedywhereupon. the gun is set undert-his elevationWithitheaid of the Pin- 101130 and the hand'wheeel 35. "If'the target'js' not Visible-,'the gun isfpointedatia visible object intheforefield, for instance a church-steepleand" the angular distancebetween the lines connecting the range with .said visible point and withthe invisible target, respectively, determined, whereupon the supportingmember 20, together with the .cradle-blaseand the gun; is turned aboutthe training-pivot 16 through said angulardistance with the aid of thedivision on segment 19, 'Finally the supporting member 20 is clamped tothe segment'lf), the/cradle f2? clamped to the supporting member 20. and

to the'cradle-base 26. 7 hat I claim, is v the hand'wheet 3 5immobilized with respect 113A machine gun'support comprising a j spidermember, an arcuate guide member,

means for" permitting the arcuate guide member, to be revolvedconsisting of a pivot pinfmounted on one of said members and asocket'forthe pin mountedyon the other of said members, a telescopic leg se- .cmedto each arm of the spider member, a

'horizontalIy-disposed arcuate segment rigidly supported by e'ach arm ofthe spider member, one "end of said arcuate guide memberbeing adapted toslide along said arcu ate segmentiwhen thev guide -member' is revolved,a level on said spider member to permitthevertical setting of said pivotpin'by adjustment of said telescopic legs, a cradle member adapted tosupport the gun and mounted onsa-id arcuate guide member, a

scale on one of the two last-mentioned mem- I ,JAoo Us HENNEVELD.

